auto border every 4 week on the right

hi
I have made a calandar and every 4 weeks i need a red tick line on the right of the cels.

So for 2017 the first line is on the weeknumber 3 than 7 than 11 and the last line for 2017 is in week 51
But when i change the year the lines must auto change
so for 2018 it must be week 3 7 11 15 and so on